Q.Trace the complete developmental sequence a single plant cell derived from a root or shoot apical meristem is likely to pass through, from its origin to the eventual death of the structure it belongs to.

[!TLDR]

Meristematic cell to growth (elongation) to differentiation to [dedifferentiation to redifferentiation, where applicable] to maturation to senescence and death. …

A cell originating in a root or shoot apical meristem begins as a small, actively dividing meristematic cell. It then undergoes growth, chiefly through vacuolar water uptake during the elongation phase, expanding considerably in size without further division. Next it differentiates, acquiring the structural and biochemical specialisation appropriate to a particular functional role -- becoming, for instance, a xylem vessel element, a parenchyma cell, or an epidermal cell.

For many cells, differentiation is essentially the final developmental step, and the cell simply matures into, and then functions in, that specialised role. But some already-differentiated cells -- interfascicular or cortical parenchyma, most notably -- can subsequently dedifferentiate, regaining the capacity to divide (as when they form the vascular cambium or cork cambium), and the new cells this dedifferentiated tissue produces then redifferentiate, maturing into a specific functional type once again (secondary xylem and phloem, or cork). Whichever path a given cell follows, it eventually enters senescence: a g …

Trace the sequence step by step in strict order, noting explicitly that the dedifferentiation-redifferentiation loop is an optional branch that only some cells (s …

Presenting dedifferentiation and redifferentiation as steps every single plant cell must pass through -- in fact most differentiated cells mature and …